31480464 has 80 divisors (see below), whose sum is σ = 86994432. Its totient is φ = 9775104.

The previous prime is 31480441. The next prime is 31480507. The reversal of 31480464 is 46408413.

It is a super-2 number, since 2×31480464² = 1982039227310592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141057 + ... + 141279.

Almost surely, 2^31480464 is an apocalyptic number.

31480464 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31480464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43497216).

31480464 is an abundant number, since it is smaller than the sum of its proper divisors (55513968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31480464 is a wasteful number, since it uses less digits than its factorization.

31480464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 31480464 is about 5610.7454050242. The cubic root of 31480464 is about 315.7526772798.

Adding to 31480464 its reverse (46408413), we get a palindrome (77888877).

The spelling of 31480464 in words is "thirty-one million, four hundred eighty thousand, four hundred sixty-four".